Let's roll up our sleeves and solve this. We have 658 and we're going to multiply it by 51, essentially adding 658 to itself 51 times.
Step 1: 0 + 658 = 658
Step 2: 658 + 658 = 1316
Step 3: 1316 + 658 = 1974
Step 4: 1974 + 658 = 2632
Step 5: 2632 + 658 = 3290
Step 6: 3290 + 658 = 3948
Step 7: 3948 + 658 = 4606
Step 8: 4606 + 658 = 5264
Step 9: 5264 + 658 = 5922
Step 10: 5922 + 658 = 6580
Step 11: 6580 + 658 = 7238
Step 12: 7238 + 658 = 7896
Step 13: 7896 + 658 = 8554
Step 14: 8554 + 658 = 9212
Step 15: 9212 + 658 = 9870
Step 16: 9870 + 658 = 10528
Step 17: 10528 + 658 = 11186
Step 18: 11186 + 658 = 11844
Step 19: 11844 + 658 = 12502
Step 20: 12502 + 658 = 13160
Step 21: 13160 + 658 = 13818
Step 22: 13818 + 658 = 14476
Step 23: 14476 + 658 = 15134
Step 24: 15134 + 658 = 15792
Step 25: 15792 + 658 = 16450
Step 26: 16450 + 658 = 17108
Step 27: 17108 + 658 = 17766
Step 28: 17766 + 658 = 18424
Step 29: 18424 + 658 = 19082
Step 30: 19082 + 658 = 19740
Step 31: 19740 + 658 = 20398
Step 32: 20398 + 658 = 21056
Step 33: 21056 + 658 = 21714
Step 34: 21714 + 658 = 22372
Step 35: 22372 + 658 = 23030
Step 36: 23030 + 658 = 23688
Step 37: 23688 + 658 = 24346
Step 38: 24346 + 658 = 25004
Step 39: 25004 + 658 = 25662
Step 40: 25662 + 658 = 26320
Step 41: 26320 + 658 = 26978
Step 42: 26978 + 658 = 27636
Step 43: 27636 + 658 = 28294
Step 44: 28294 + 658 = 28952
Step 45: 28952 + 658 = 29610
Step 46: 29610 + 658 = 30268
Step 47: 30268 + 658 = 30926
Step 48: 30926 + 658 = 31584
Step 49: 31584 + 658 = 32242
Step 50: 32242 + 658 = 32900
Step 51: 32900 + 658 = 33558

So, 658*51 = 33558